Hich of the following equations is balanced correctly?

A.

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

B.

3 H2O → H2 + 3 O2

C.

2 C3H3 + O2 → 2 CO2 + H2O

D.

Cl2 + 2 KBr → KCl + Br2

A pendulum takes 0.5 second to complete one cycle. What is the pendulum's period and frequency?

How are n type semiconductors and p type semiconductors alike. How are they different

Listed below are geographic features of the terrestrial worlds. In each case, identify the geological process: impact cratering, volcanism, erosion, or tectonics (where tectonics is any large-scale processes affecting the structure of the planetary

A car having an initial speed of 16 meters per second is uniformly brought to rest in 4.0 seconds. How far does the car travel during this 4.0 second interval

A car slams on its brakes, producing friction between the tires and the road. Into which type of energy is the mechanical energy of the car converted? A. gravitational B. chemical C. heat D. light

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?